This page contains Tony Hawk's Underground 2 Hints for GameBoy Advance called "Letters" and has been posted or updated on Nov 27, 2006 by pokemon boy. Let us know what you think of this Hint by thumbs voting.
You need to collect the letters "COMBO" all in one trick. This completes a task. The best way to do this is by a grind. Press A to grind.
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